Hello. The product was delivered quickly. The price is good compared to a write-once media. The engraving is done effortlessly on an LG burner BH10LS30, as playback on a Blu-ray player Toshiba BDX1250KE salon. Obviously, given the ability to be etched, this can be quite long. It takes about 1:30 to 40 GB etching. As for reliability over time, it is premature to give an opinion. That :-))